Bluetooth version: 4.1+EDR,Compatible with Bluetooth 1.1/1.2/2.0/2.1 and above,Bluetooth Profiles: HFP1.6 ,HSP1.2, A2DP1.2, AVRCP1.4Transmission Range: Up to 10m / 33ft,Charge time: 1-2hours,Music Play time: 4-5 hours (volume will affect),Talking Time: about 5 hours,Standby time: 160 hours,Cable length: 720mmBluetooth headsets are available for all Bluetooth smartphones or other devices such as tablets and music players. The music gadget is ideal for running, cycling, running, fitness or other exercises, enjoying its wonderful sports and music world at any timeComfort and safety: ergonomic design, soft and soft silicone material, elegant texture, elegant curves, stylish appearance. The innovative earhook, which is flexible and sweat resistant, guarantees durability regardless of physical activity. Even if you use a Bluetooth headset for a long time, it will bring you a super comfortable feeling.If you have any questions, you can contact us at any time and we will provide you with the best service.